[cfe-users] Setting target to 64 bits

[Miguel Guedes]

Also, `llc --version' gives:

$ llc --version
LLVM (http://llvm.org/):
  LLVM version 3.2svn
  Optimized build.
  Built Apr 19 2013 (12:05:39).
  Default target: x86_64-unknown-linux-gnu
  Host CPU: corei7

  Registered Targets:
    x86    - 32-bit X86: Pentium-Pro and above
    x86-64 - 64-bit X86: EM64T and AMD64